کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4074492 1267011 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biomechanical consequences of humeral component malpositioning after anatomical total shoulder arthroplasty
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Biomechanical consequences of humeral component malpositioning after anatomical total shoulder arthroplasty
چکیده انگلیسی

HypothesisWe hypothesized that the malpositioning of the humeral component can preclude the long-term success of anatomical total shoulder arthroplasty. The goal of this study was to evaluate the mechanical consequences of superior and inferior malpositioning of the humeral head.Materials and methodsA numerical musculoskeletal model of the shoulder joint allowing natural humeral head translation was used to simulate a loaded abduction movement controlled by muscular activation. An inferior and superior malpositioning of 5 mm were compared to an optimal positioning. Impingements, articular contact pattern, and cement stress were evaluated.ResultsInferior malpositioning of the humeral head induced impingement and limited the abduction level, while superior malpositioning increased the subluxation risk. Both inferior and superior malpositioning increased the stress level within the cement mantle.DiscussionThis numerical study highlights the importance of an anatomical reconstruction of the glenohumeral surfaces for the success rate of anatomical total shoulder arthroplasty.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Shoulder and Elbow Surgery - Volume 19, Issue 8, December 2010, Pages 1184–1190
نویسندگان
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